Application of porous solid nitrogen to space borne cooling missions
Abstract
A basic experiment of the sublimation heat transfer of solid cryogen has been conducted for its potential applications to cryogenic cooling of onboard instruments. The most serious concern is the separation of solid cryogen from a cooling section caused by local rapid sublimation (dry-out). The condition of the dry-out initiation and the heat transfer performance in the dry-out state was especially pursued. The order of the effective thermal conductivity of porous solid nitrogen was found to be almost the same as that of pure one and far smaller than that predicted in the sublimation-filtration-condensation (SFC) process. Application of the solid nitrogen to onboard cooling is also discussed.
- Publication:
-
Tokyo Symposium on Mechanics for Space Flight
- Pub Date:
- March 1985
- Bibcode:
- 1985tmsf.proc...91I
- Keywords:
-
- Cryogenic Cooling;
- Cryogenics;
- Heat Transfer;
- Solid Nitrogen;
- Spacecraft Instruments;
- Thermal Conductivity;
- Cryostats;
- Drying;
- Porosity;
- Fluid Mechanics and Heat Transfer